xfs: call xfs_buf_iodone directly

All unmarked dirty buffers should be in the AIL and have log items
attached to them. Hence when they are written, we will run a
callback to remove the item from the AIL if appropriate. Now that
we've handled inode and dquot buffers, all remaining calls are to
xfs_buf_iodone() and so we can hard code this rather than use an
indirect call.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

1 files changed, 8 insertions, 16 deletions

diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 6a2c942372fc..dda0c9445879 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -658,7 +658,6 @@ found:
 	 */
 	if (bp->b_flags & XBF_STALE) {
 		ASSERT((bp->b_flags & _XBF_DELWRI_Q) == 0);
-		ASSERT(bp->b_iodone == NULL);
 		bp->b_flags &= _XBF_KMEM | _XBF_PAGES;
 		bp->b_ops = NULL;
 	}
@@ -1194,10 +1193,13 @@ xfs_buf_ioend(
 	if (!bp->b_error && bp->b_io_error)
 		xfs_buf_ioerror(bp, bp->b_io_error);
 
-	/* Only validate buffers that were read without errors */
-	if (read && !bp->b_error && bp->b_ops) {
-		ASSERT(!bp->b_iodone);
-		bp->b_ops->verify_read(bp);
+	if (read) {
+		if (!bp->b_error && bp->b_ops)
+			bp->b_ops->verify_read(bp);
+		if (!bp->b_error)
+			bp->b_flags |= XBF_DONE;
+		xfs_buf_ioend_finish(bp);
+		return;
 	}
 
 	if (!bp->b_error) {
@@ -1205,9 +1207,6 @@ xfs_buf_ioend(
 		bp->b_flags |= XBF_DONE;
 	}
 
-	if (read)
-		goto out_finish;
-
 	/*
 	 * If this is a log recovery buffer, we aren't doing transactional IO
 	 * yet so we need to let it handle IO completions.
@@ -1226,14 +1225,7 @@ xfs_buf_ioend(
 		xfs_buf_dquot_iodone(bp);
 		return;
 	}
-
-	if (bp->b_iodone) {
-		(*(bp->b_iodone))(bp);
-		return;
-	}
-
-out_finish:
-	xfs_buf_ioend_finish(bp);
+	xfs_buf_iodone(bp);
 }
 
 static void